1.

package com.imooc;

public class BUS {
?????? public String siji;
?????? public int zuowei;
?????? public int chengke;
????
?????? public void Set() {
??? ???
??? ??? System.out.println("司機(jī)姓名"+siji+"有多少座位"+zuowei+"有多少位乘客"+chengke);
??? ??? System.out.println("巴士比出租車賺錢");
?????? }
}

2.

package com.imooc;

public class car extends BUS {
?
???????? public void set() {
??????? ? System.out.println("司機(jī)姓名"+siji+"有多少座位"+zuowei+"有多少位乘客"+chengke);
??????? ? System.out.println("沒(méi)毛病老鐵");
???????? }
}

3.

package com.imooc;

public class ceshi {

?public static void main(String[] args) {
??// TODO Auto-generated method stub
??car ca =new car();
??ca.siji="老王";
??ca.zuowei=52;
??ca.chengke=99;
??ca.Set();

?}

}